Event Log - Lanex TM-77 Operating Manual

3.5

Event log

TM-77 and MD-77 devices can record the time and date of an event of a specified
criterion. The devices record the following types of events:
• an appearance or loss of power supply voltage,
• an appearance or loss of G.703 E1 interface input signal,
• an appearance or loss of AIS signal transmitted from a unit connected to E1 interface or
connected to E1 channel with E2 collective signal,
• an appearance or loss of E2 optical interface input signal,
• a gain or loss of G.742 frame synchronization on E2 optical interface,
• exceeding or going below 10
• exceeding or going below 10
• exceeding or going below a user-defined ES 15-minute errored second counter (ES15)
threshold – there is a separate counter for each interface,
• exceeding or going below a user-defined ES 24-hour errored second counter (ES24)
threshold – there is a separate counter for each interface,
• exceeding or going below a user-defined SES 15-minute severely errored second counter
(SES15) threshold – there is a separate counter for each interface,
• exceeding or going below a user-defined SES 24-hour severely errored second counter
(SES24) threshold – there is a separate counter for each interface,
• activation or deactivation of test loops,
• approval of a device set-up modification,
• an attempt of unauthorized access to the device set-up system using VT100 terminal
emulator, if the system is password-protected.
Reviewing and deleting the event log as well as defining maximum and minimum
threshold values for ES15,24 and SES15,24 counters of E1 and E2 interfaces is possible with
the Lanwin application or VT100 terminal emulator described in sections 5.5.4 Event log
and 6.6.1 Event log.
IOA77-1F
4 E1/G.703 P
X LESIOCHRONOUS
O
PERATING
-3
error rate threshold on E2 optical interface,
-6
error rate threshold on E2 optical interface,
11
M
ULTIPLEXER
M
ANUAL
May 2007